JK (Josef Klier)

4BM

One PieceM-Series
Official source link providedPrice basis: RetailerLast checked: Jan 29, 2026

Specifications

Cup Diameter
16.50mm
16.50mm18.50mm
vs. All Models
9% · Small
Cup Depth
Deep
Cup Shape
bowl
Bore Size
4.60mm
3.80mm4.80mm
vs. All Models
69% · Large
Rim Shape
Flat
Recommended For
High HornBright Tone
View on official site

Other Brand Similar Specs

Spec proximity does not guarantee actual feel or tone. Trying before purchase is recommended.
Osmun CHD (Chicago Deep)High Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup shape data unavailable
Specs used: 4 / missing: 1
Osmun LD (London Deep)High Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup shape data unavailable
Specs used: 4 / missing: 1
Osmun L (London)Medium Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup Depth: deep → medium deepCup shape data unavailable
Specs used: 4 / missing: 1
Osmun CH (Chicago)Medium Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Osmun One-Piece ChicagoMedium Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Osmun One-Piece LondonMedium Similarity
Cup Diameter: +0.01mmBore: +0.02mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Conn 5Medium Similarity
Cup Diameter: +0.01mmBore: +0.05mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Bach 12Low Similarity
Cup Diameter: SameBore: -0.10mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Osmun G (Geyer)Low Similarity
Cup Diameter: +0.01mmBore: +0.20mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Osmun H (Haydn)Low Similarity
Cup Diameter: +0.01mmBore: -0.10mmCup Depth: deep → shallowCup shape data unavailable
Specs used: 4 / missing: 1
Osmun B (Bloom)Low Similarity
Cup Diameter: +0.01mmBore: +0.20mmCup Depth: deep → medium shallowCup shape data unavailable
Specs used: 4 / missing: 1
Alexander 4Low Similarity
Cup Diameter: SameBore: -0.90mmCup Depth: deep → shallowCup shape data unavailable
Specs used: 4 / missing: 1

Other Models by JK (Josef Klier)

01AKK-Series18.50mm · Very Deep · 4.80mm01BKK-Series18.50mm · Deep · 4.60mm01CKK-Series18.50mm · Medium Deep · 4.40mm01DKK-Series18.50mm · Medium · 4.20mm01EKK-Series18.50mm · Medium Shallow · 4.00mm

Where to Find

View on Official Sitejk-klier.de
Search on GoogleGoogle Search

This site does not sell mouthpieces. Links are provided for reference only. Please verify prices and availability directly with retailers.